arrow
鍭 centers on an arrow, specifically a metal-tipped arrow. The single given meaning is straightforward and concrete.
鍭 combines 金 (metal) with 侯, which likely contributes the sound. The character specifically denotes a metal arrowhead or arrow.
The left side 金 (metal) and the right side 侯 (which resembles a target or a nobleman) together suggest a metal arrow aimed at a target. Picture a sharp metal arrowhead flying toward its mark.
For コウ, imagine a metal arrow striking a gong with a loud 'kou' sound: the gong's resonance cues コウ, and the metal arrow makes the impact.